Add site index, deploy script and Green Man mask build

Static site for builds.kestrelsnest.social: an index page with one card per build, an rsync deploy script modelled on pantry, and the Green Man mask guide with its templates and print files.

Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GrX9qMoNihcWLX3xoJhabw

CLAUDE.md

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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+Builds is a static site of craft build write-ups: templates, 3D print files and step-by-step guides. There is no build step and no backend.
+
+**Live URL:** https://builds.kestrelsnest.social
+
+## File Structure
+
+- `index.html` - Site index (HTML/CSS in one file, no JavaScript). One `<li class="build">` card per build, newest first.
+- `og-image.jpg` - OpenGraph image for the index, 1200 x 630
+- `deploy` - Rsync deployment script
+- `<build>/` - One folder per build, self-contained: `index.html`, `img/`, `dl/`
+  - `greenman/` - Green Man mask
+
+## Conventions
+
+- Each build folder is self-contained and uses relative links, so it works at any path.
+- Build pages and the index share a look: Bricolage Grotesque for headings, Inter for text, the same green accent and neutral tokens, light and dark via `prefers-color-scheme`.
+- Downloads live in `<build>/dl/`. Zip files there are part of the site, so `*.zip` is deliberately NOT in `.gitignore`.
+- `greenman/index.html` is generated from the mask kit's own source (not in this repo). Hand edits to it are lost when the kit is regenerated; change the source and re-copy.
+
+## Adding a build
+
+1. Create `<name>/index.html` with its `img/` and `dl/`.
+2. Add a card to the top of the list in the top-level `index.html`.
+3. `./deploy -n`, then `./deploy`.
+
+## Development
+
+```bash
+python3 -m http.server 8000
+```
+
+Then open `http://localhost:8000`.
+
+## Deployment
+
+The `deploy` script uses rsync to push to YunoHost (a My Webapp static app, like pantry):
+
+```bash
+./deploy -n    # dry run, changes nothing
+./deploy       # push
+```
+
+**Important deployment notes:**
+- `DIR` in `deploy` is `/var/www/my_webapp__3/www`. The script refuses to run if it is ever reset to the `my_webapp__N` placeholder.
+- rsync runs with `--delete`: anything on the server that is not in this folder is removed. Do not keep server-only files in the web root.
+- `HOST=social` is an SSH config alias, the same one pantry uses.
+
+## OpenGraph
+
+Meta tags in the index `<head>` point to `https://builds.kestrelsnest.social/og-image.jpg`. If the URL changes, update `og:image`, `og:url` and `twitter:image`.